Woodstock W1011 - 4" to 3" Reducer

Woodstock engineered the inside diameter of the 2-1/2-inch side of each of these fittings to duplicate the 2-1/2-inch opening on your shop vac. Insert the shop vac brand hose to the vac and the other end to one of these fittings to power the dust collection system. The outside diameter matches Woodstock's standard dust collection hose to function as regular reducers. Reducer 4" X 3" for Dust Collector * Made with Anti-Static Additive!